The effect of Lepidium sativum and Lepidium perfoliatum gums on properies of nanocapsule containing essential oil of orange

This study was investigated whit aimed to the effect of different walls including Lepidium sativum and Lepidium perfoliatum and a combination of both gums for nano-capsulation of citrus essential oil, in order to maximize the efficiency of encapsulation and the stability of emulsion. For this purpose, emulsion containing 4% orange peel oil in aqueous solution containing 1% (w/w) of the total composition of the substance wall was prepared with the help of ultra-thoracic and ultrasound and then it was dried by freeze dryer. Stability of emulsion was measured by calculating the particle size, the percentage separation of emulsions, zeta potential and apparent viscosity and the nano-capsules quality was evaluated by determining efficiency of nano-capsulation, water activity and colorimetric. Reports of tests had indicated that due to the change in the type of wall, emulsion and powder characteristics were changed. Particle size of mixed emulsion (Lepidium sativum and Lepidium perfoliatum) was reported smaller than two other examples. As a result, the desired emulsion was more uniform. In addition, the results showed that with increasing viscosity in the gum, the efficiency of nano-capsules was increased. In terms of colorimetric characteristics, Powder containing Lepidium sativum seed gum had a higher brightness parameter than the other two Powders. Finally, the investigation of nano-capsule structure with scanning electron microscopy had showed that the nanoparticles was spherical and regular in all three samples.